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Close-up of a brilliant diamond on a black reflective surface, highlighting the gem’s cut and sparkle.

Top 3 Most Expensive Gemstones Ever Found

Explore the three most expensive gems—Pink Star, Oppenheimer Blue and Blue Moon diamonds—and learn how their hues, carat weight and record auction prices make them priceless.

Top 3 Most Expensive Gemstones Ever Found

Explore the three most expensive gems—Pink Star, Oppenheimer Blue and Blue Moon diamonds—and learn how their hues, carat weight and record auction prices make them priceless.